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Philips Semiconductors Product specification
TOPFET high side switch BUK205-50Y
SMD version of BUK201-50Y
DESCRIPTION QUICK REFERENCE DATA
Monolithic temperature and SYMBOL PARAMETER MIN. UNIT
overload protected power switch
based on MOSFET technology in a I
L
Nominal load current (ISO) 6 A
5 pin plastic surface mount
envelope, configured as a single
high side switch. SYMBOL PARAMETER MAX. UNIT
APPLICATIONS V
BG
Continuous off-state supply voltage 50 V
I
L
Continuous load current 15 A
General controller for driving T
j
Continuous junction temperature 150 ˚C
lamps, motors, solenoids, heaters. R
ON
On-state resistance 60 mΩ
FEATURES FUNCTIONAL BLOCK DIAGRAM
Vertical power DMOS switch
Low on-state resistance
5 V logic compatible input
Overtemperature protection -
self resets with hysteresis
Overload protection against
short circuit load with
output current limiting;
latched - reset by input
High supply voltage load
protection
Supply undervoltage lock out
Status indication for overload
protection activated
Diagnostic status indication
of open circuit load
Very low quiescent current
Voltage clamping for turn off of
inductive loads
ESD protection on all pins
Reverse battery and
overvoltage protection Fig.1. Elements of the TOPFET HSS with internal ground resistor.
PINNING - SOT426 PIN CONFIGURATION SYMBOL
PIN DESCRIPTION
1 Ground
2 Input
3 (connected to mb)
4 Status
5 Load
Fig. 2. Fig. 3.
mb Battery
BATT
LOAD
INPUT
GROUND
STATUS
POWER
MOSFET
RG
CONTROL &
PROTECTION
CIRCUITS
mb
12 45
3
B
G
L
I
S
HSS
TOPFET
July 1996 1 Rev 1.000